And heaven-sprung adage of the olden time! -
Say, canst thou make thyself? - Learn first that trade; -
Haply thou mayst know what thyself had made.
What hast thou, Man, that thou dar'st call thine own? -
What is there in thee, Man, that can be known? -
Dark fluxion, all unfixable by thought,
A phantom dim of past and future wrought,
Vain sister of the worm, - life, death, soul, clod -
Ignore thyself, and strive to know thy God!
-Samuel Taylor Coleridge, Self-Knowledge